Pulp-flow-box shower device.



No. 888,060. v PATENTED MAY 19, 1808. e. H. BLANGHARD.

PULP PLOW BOX SHOWER DEVICE.

APPLICATION FILED 82m. 0. 1007.

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PATEN ii PULP-FLOW-BOX SHOWER DEVICE.

Specification of Letters Patent.

Patented May 19, 1908.

Application filed September 9, 1907. Serial No. 391,901.

To all whom it may concern:

Be it known that I, GEORGE H. BLANCH- ARD, ofSouth Glens Falls, in the county of Saratoga and State of New York, have invented certain new and useful Improvements in Pulp-Flow-Box Shower Devices and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same, ref erence being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification.

The object of my invention is to provide means for washing down the walls and partitions of the flow box of a pulp or paper machine, and beating down the foam thereon, and all by the use of a minimum amount of water through the spray pipe.

Figure 1 shows a perspective view of a flow box with my improvements applied, certain portions being broken out to better illustrate the construction. Fig. 2 is a side elevation of the spray pipe and means for driving it, and the coupling for attaching the supply pipe thereto. Figs. 3, 4, 5, 6 and 7 are details of the coupling employed for connecting the supply pipe with the spray pipe.

Referring to the reference letters and figures in a more particular description, 1 indicates the ordinary flow box employed in connection with a pa er or pulp machine, which has the usual encs 2 and 3 over which the stuff flows into and out of the box, with the intermediate partition 4 elevated somewhat above the bottom of the box and under which the stuff flows. Above the surface of the stuff and on the delivery side of and adjacent to the partition 4, there is located a spray pipe 5 mounted for rotation in bearings 6 and 7 advantageously provided on the upper edge of the walls of the flow box. The spray pipe 5 is extended more or less and receives for the purpose of rotating the same preferably a band pulley 8. In that portion of the spray pipe which crosses the top of the flow box, the same is provided with a spiral row of spray or jet openings 5"*. Water under pressure is supplied to the spray pipe 5 from some head pressure or forcing mechanism through the pipe 9. A swiveling oint is provided between the stationary pipe 9 and the rotary spray pipe 5, by means of the fitting 10, having a conically faced end 10 and ears 10 which may be screw-threaded onto the stationary pipe 9, while the rotary pipe may be provided with the conical endiitting 1 1 having a shoulder 11' against which may bear the collar 12 having perforated ears. The conical end of the art 11 is adapted to be received in the conical socket in the end of the part 10 and these two parts are held together by the bolts 13 passing through the part 12 and the ears 10 and provided with springs 14. It is evident that this coupling allows the pipe 5 to rotate with reference to the supply pipe while maintaining a tight or substantially tight joint between the two.

In the use of pulp and paper flow boxes, more or less trouble is had from clots or slugs of pulp accumulating on the portions of the walls and partitions which extend above the surface of the stuff, which drop ofi from time to time, and assing into the machine cause trouble and efeots. Trouble is also had in flow boxes with foam particularly immediately behind the middle partition. The spray delivered by the rotary pipe 5 washes down the walls and partitions of the box, preventing the accumulation of clots or slugs of pulp and also beats down the foam on the surface of the stuff. The spiral arrangement of the holes or jet openings give a progressive movement to the spray in its action particularly on the surface of the stuff, and beats down the foam effectively without concentrating any number of jets upon the surface of the stuff, which would have a tendency to agitate it or make it boil and counteract the purpose in this behalf.

It is evident that other means than a band pulley could be provided for rotating the spray pipe and other modifications and changes made in and from the construction illustrated and described without departing from the spirit of my invention.

What I claim as new and desire to secure by Letters Patent is:

1. The combination with a pulp or paper machine flow box of a rotary shower pipe located above the surface of the stuff and adjacent to the partition thereof, substantially as set forth.

2. The combination with a pulp or paper machine flow box of a rotary shower pipe located above the surface of the stuff and adjacent to the partition thereof,-and provided with a spiral arrangement of jet openings, substantially as set forth.

3. The combination with a pulp or paper machine flow box of a shower pipe extended.

across the boX and located at a point which I In witness whereof, I have afixed my sigwould be above the surface of the stuff and adjacent to the partition thereof, a spiral row of holes or jet openings provided in said pipe, and means for rotating the pipe and supplying fluid under pressure thereto, substantially as set forth.

nature, in presence of two Witnesses, this 3rd day of September 1907.

GEORGE H. BLANOHARD. Witnesses:

GEO. N. BARNEY, HARRY F. BLANGHARD. 

